diff --git a/src/search.cpp b/src/search.cpp index c256cfc0..b235a1e6 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -857,16 +857,14 @@ split_point_start: // At split points actual search starts from here newDepth = depth - ONE_PLY + ext; // Step 13. Futility pruning (is omitted in PV nodes) - if ( !PvNode - && !captureOrPromotion + if ( !captureOrPromotion && !inCheck && !dangerous - && move != ttMove - && (bestValue > VALUE_MATED_IN_MAX_PLY || ( bestValue == -VALUE_INFINITE - && alpha > VALUE_MATED_IN_MAX_PLY))) + && move != ttMove) { // Move count based pruning - if ( depth < 16 * ONE_PLY + if ( !PvNode + && depth < 16 * ONE_PLY && moveCount >= FutilityMoveCounts[depth] && (!threatMove || !refutes(pos, move, threatMove))) { @@ -883,7 +881,7 @@ split_point_start: // At split points actual search starts from here futilityValue = ss->staticEval + ss->evalMargin + futility_margin(predictedDepth, moveCount) + Gain[pos.piece_moved(move)][to_sq(move)]; - if (futilityValue < beta) + if (!PvNode && futilityValue < beta) { if (SpNode) sp->mutex.lock();